CARLO GAVAZZI LDI 35 - CONFIGURATION SOFTWARE User manual

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LDI 35
OPERATING INSTRUCTIONS
• General features 2
• Technical features 3
• Installation 10
• Preliminary operations 12
• Front panel description 13
• Operating mode 15
Important:
We suggest you keep the original packing for a further shipping of the
instrument.
In order to guarantee a correct use of the instrument, we recommend
the user to carefully read the present instruction manual.

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CARLO GAVAZZI Instruments
Multi-range µP-basedpanelindicators/controllersforvoltage,cur-
rent and temperature measurements
LDI35.AV0 / LDI35.AV2 / LDI35.CF
rev.0
Operating instructions
Important:
We suggest you keep the original packing for a further shipping of the
instrument.
Inordertoguaranteeacorrectuseoftheinstrument,werecommendthe
user to carefully read the present instruction manual.
GENERAL FEATURES
The most important features are:
•measurement of the input value;
•display of the measured value;
•one control point of the measured value (if available);
•display of the maximum measured value.
The main programming parameters are:
•input selection;
•programming of: electrical scale, displayed scale and decimal point
position;

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•selection of displaying mode;
•programmingofalltheparametersrelatingto theset-point(ifavailable);
•programming of all the parameters relating to the digital filter.
TECHNICAL FEATURES
ACCURACY (VOLTAGE AND CURRENT)
LDI35.AV0: ±0.3% F.S., ±1 dgt (@ 25°C ±5°C, R.H. ≤60%);
LDI35.AV2:
VDC and ADC: ±0.3% F.S., ±1 dgt (@ 25°C ±5°C, R.H. ≤60%);
VAC andAAC: ±0.5% F.S., ±1 dgt (@ 25°C ±5°C, R.H. ≤60%, 50/60Hz,
5 to 100% F.S.).
ACCURACY (LDI35.CF: RTD/ΩTEMPERATURE)
Pt100/Pt1000: ±0.3% F.S., ±2 dgt (@ 25°C ±5°C, R.H. ≤60%);
Ni100: ±0.5% F.S., ±2 dgt (@ 25 °C ±5°C, R.H. ≤60%);
Ω: ±0.3% F.S., ±2 dgt (@ 25°C ±5°C, R.H. ≤60%).
ACCURACY (LDI35.CF: TC TEMPERATURE)
±0.3% F.S., ±2 dgt (@ 25°C ±5°C, R.H. ≤60%) from -50°C to the limit of
the input range;
±1% F.S., ±2 dgt (@ 25°C ±5°C, R.H. ≤60%) from -200°C to -5°C of the
input range.
TEMPERATURE DRIFT (VOLTAGE AND CURRENT)
LDI35.AV0: ±200 ppm/°C;
LDI35.AV2: ±200 ppm/°C.

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TEMPERATURE DRIFT (LDI35.CF: RTD / TC / Ω)
±200 ppm/°C.
SAMPLING RATE
LDI35.AV0: 4 times/second, dual slope 16 bits A/D converter
LDI35.AV2: 2 times/second, dual slope 16 bits A/D converter
LDI35.CF temperature measurement: 2 times/second, dual slope
16 bits A/D converter
DISPLAY
7-segment LED, h 14.2 mm; 3 1/2digits or 3 digits + dummy zero.
MAXIMUM INDICATIONS
LDI35.AV0: 3 1/2digit: 1999; 3 + 0 digit: 9990;
LDI35.AV2: 3 1/2digit: 1999 (DC/AC); 3 + 0 digit: 9990 (DC/AC);
LDI35.CF: temperature: depending on the range and on the type of
probe; resistance: 199.9 Ω(STD) / 1999 Ω(on request).
MINIMUM INDICATIONS
LDI35.AV0: 3 1/2digit: -1999; 3 + 0 digit: -1990;
LDI35.AV2:31/2digit:-1999(DC),0(AC);3+0 digit:-1990(DC),0(AC).
LDI35.CF: temperature: depending on the range and on the type of
probe; resistance: 0.
MEASUREMENT (VOLTAGE / CURRENT)
LDI35.AV0: DC voltage/current.
LDI35.AV2: DC voltage/current andAC voltage/current (measurement

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oftheaveragevalueresultingfromthesinehalf-waverectificationofthe
input voltage/current by RMS calibration).
VOLTAGE / CURRENT INPUTS (LDI35.AV0)
200 mVDC, range: -199.9 mVDC to 199.9 mVDC
20 VDC, range: -19.99 VDC to 19.99 VDC
200 VDC, range: -199.9 VDC to 199.9 VDC
2 mADC, range: -1.999 mADC to 1.999 mADC
20 mADC, range: -19.99 mADC to 19.99 mADC
Other inputs are available by acting on the scaling parameters.
VOLTAGE / CURRENT INPUTS (LDI35.AV2)
200 VDC, range: -199.9 VDC to 199.9 VDC
500 VDC, range: -500 VDC to 500 VDC
2 ADC, range: -1.999 ADC to 1.999ADC
5 ADC, range: -5.00 ADC to 5.00 ADC
200 VAC, range: 0 VAC to 199.9 VAC
500 VAC, range: 0 VAC to 500 VAC
2 AAC, range: 0 AAC to 1.999 AAC
5 AAC, range: 0 AAC to 5.00 AAC
Other inputs are available by acting on the scaling parameters.
FREQUENCY RANGE (VOLTAGE / CURRENT - LDI35.AV2)
From 40 to 400 Hz (accuracy: ±0.5% F.S., ±2 dgt @ 25 °C, 400 Hz).
OVER-RANGE (VOLTAGE / CURRENT)
Continuous: 1.2 Un/In (rated inputs), for 1 second: 2 Un/In.

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INPUTS (RTD TEMPERATURE / Ω)
CFX: RTD, Pt100, range: -200 °C / -328 °F to +850 °C / 1562 °F
CFX: RTD, Ni100, range: -60 °C / -76 °F to +180 °C / 356 °F
CFX: Ω, 200.0 Ω, range: 0 Ωto 199.9 Ω
CFP: RTD, Pt1000 range: -200 °C / -328 °F to +850 °C / 1562 °F
CFP: Ω, 2000Ωrange: 0 Ωto 1999 Ω
Other inputs are available by acting on the scaling parameters.
INPUTS (TC TEMPERATURE)
CFX/CFP: TC-J, range: -50 °C / -58 °F to +760 °C /+1400 °F
CFX/CFP: TC-L, range: -50 °C / -58 °F to +760 °C / +1400 °F
CFX/CFP: TC-K, range: -200 °C / -328 °F to +1260 °C / +1999 °F
CFX/CFP: TC-S, range: +350 °C / +1750 °C
CFX/CFP: TC-T, range: -200 °C / -328 °F to +400 °C / +752 °F
Other inputs are available by acting on the scaling parameters.
COMPENSATION (RTD/Ω)
For 3-wire connections, line resistance up to 10 Ω.
COMPENSATION (TC)
Cold junction, within a temperature range from 0 to 50 °C of ambient
temperature.
ALARM SET-POINTS
0 (standard) 1 (on request).
Alarmtype:thealarmisactiveonlyfor under/over-range,highalarm,low
alarm, low alarm with disabling at power-on, high alarm with latch, low

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alarm with latch.
Set-point and hysteresis level: programmable from 0 to 100% of the
displayed range;
Activation/deactivationtimedelay:programmablefrom0to255seconds;
Relay status: selectable; normally energized/de-energized;
Output contacts: 1 SPDT; rating: 5A, 250VAC/VDC, 40W/1200VA,
130.000 cycles;
min. response time: ≤500 ms (filter excluded, set-point activation time
delay: “0”);
Insulation:2000VRMSbetweenoutputandmeasuringinputs;2000VRMS
between output and excitation output.
DIGITAL FILTER
Operating range: from 0 to 1999 / 9990;
Filtering coefficient: from 1 to 255.
DATA HOLD
Automaticstorage(RAMonly)ofthemaximumvaluemeasured fromthe
previous storage reset onwards.
EXCITATION OUTPUT VOLTAGE (on request)
15 VDC insulated, not stabilized / max. 40 mA.
EXCITATION OUTPUT INSULATION
100VRMS between output and measuring input
4000VRMS between output and AC power supply input
500VRMS between output and DC power supply input.

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POWER SUPPLY INPUT
230 VAC -15% +10% 50/60 Hz (standard);
115 VAC -15% +10% 50/60 Hz (on request);
240 VAC -15% +10% 50/60 Hz (on request);
120 VAC -15% +10% 50/60 Hz (on request);
48 VAC -15% +10% 50/60 Hz (on request);
24 VAC -15% +10% 50/60 Hz (on request);
Insulation: 4000 VRMS between power supply input and all the other
inputs/outputs;
9 to 32 VDC, G.I., max. starting current: ≤1.2A/200 ms (on request);
40 to 150 VDC, G.I., max. starting current: ≤0.6A /200 ms (on request);
Insulation:500VRMSbetweenpowersupplyinputandalltheotherinputs/
outputs;
Self-consumption: 6.5 VA.
OPERATING TEMPERATURE
From 0 to +50°C (R.H. < 90% non-condensing)
STORAGE TEMPERATURE
From -10 to +60°C (R.H. < 90% non-condensing)
STABILITY OF ACCURACY
6 months
REFERENCE VOLTAGE FOR THE INSULATION
300 VRMS to earth

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DIELECTRIC STRENGTH
4000 VRMS for 1 minute
NOISE REJECTION
NMRR: 40 dB, from 40 to 60 Hz
CMRR: 100 dB, from 40 to 60 Hz
EMC:IEC 801-2, IEC 801-3, IEC801-4 (level3), EN50081-1, EN 50082-1.
IN ACCORDANCE WITH THE FOLLOWING SAFETY STANDARDS
EN 61010-1, IEC 1010-1, VDE 0411.
CONNECTIONS
Screw-type terminal board.
CASE SIZE / DIMENSIONS / MATERIAL
1/8 DIN / 48 x 96 x 83 mm / ABS, self-extinguishing: UL 94 V-0.
WEIGHT
340 g. approximately (packing included).
PROTECTION DEGREE
IP 50 (standard) / IP 65 (on request).

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INSTALLATION
Overall dimensions and panel cut-out
(all quotes are expressed in mm)
A
A
A
A
A
A
A
A
A
A
A
A
A
91 mm
75 mm
max. 10
mm
83 mm
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92 mm
45 mm
F
96 mm
48 mm
S
Mounting
Insertthe instrument intothe panel andfasten itby fixingthe two lateral
brackets(1) suppliedwith the instrumentto theappropriate location(2).
A
A
A
A
A
A
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2

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Connections
In order to select the desired range (LDI35.AV0), jumper, if necessary,
between the relevant screw terminals.
Connect LDI35.AV0 (voltmeter or ammeter) as shown in the figure.
Attention:the voltmeter inputis to beconnected in paralleltothe source
to be measured.
Attention: the ammeter input is to be connected in series to the source
to be measured.
LDI35.AV2
LDI35.AV0

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Connection of the signal transmitters (in the models LDI35.AV0 - 20mA):
•2 wires: signal to the measuring input; power supply to terminal 6;
jumperalsoterminals 4and5;loopimpedance 60to80Ω(load20mA).
•3wires: signal tothe measuring input;power supply toterminals 5 and
6; jumper also terminals 4 and 5;
• 4 wires: signal to the measuring inputs; power supply to terminals 5 and 6.
Connect LDI35.CF (thermometer) as shown in the figure. For temperature/
resistances only: if there are two wires only, jumper terminals 3 and 4.
PRELIMINARY OPERATIONS
Before supplying the instrument, make sure that the power supply
voltage correspond to what is shown in the label. Example:
LDI35.AV0.D.1.XX.XX
SER.N. 970600/20078
POWER 230 VAC 50/60 Hz
INPUT CURRENT / VOLTAGE
N. 1 set point
LDI35.CF

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FRONT PANEL DESCRIPTION
S
1. Key-pad:
functions available outside the programming phase.
Key to be pressed:
Displaying of set-point;
Displaying of maximum measured value (peak feature);
Forlongerthan5seconds:resetofthemaximummeasuredvalue
(the display will be blinking);
For longer than 5 seconds: reset of activated set-point (only for
set-point with latch).
1. Key-pad:
functions available in the programming phase.
Key to be pressed:
S
For longer than 2 seconds: programming phase entry and
password confirmation;

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Menu selection (from the first to the last);
Menu selection (from the last to the first);
S
Confirmation and entry:
•in the configuration menus;
•in the secondary menus relating to parameters.
In the selected menu / secondary menu:
•increase of displayed value
•modification of parameter selection;
In the selected menu/secondary menu:
•decrease of displayed value
•modification of parameter selection.
2. Display
Alphanumeric indication by means of 7-segment LEDs:
•of the measured value;
•of the programming parameters;
•of the measuring abnormal conditions.
3. Engineering unit window
To insert the interchangeable engineering unit in the special
window, proceed as follows: remove the front cover by inserting a
suitable screw driver in the special slot on the short sides of the front
panel; force gently until the front cover is completely removed. Insert
the desired engineering unit by means of a pair of tweezers. Replace

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thefrontcoverbyinsertingit firstinthelowerpartandthenintheupper
part of the locking system.
OPERATING MODE
• Power-on
When you switch the unit on, the instrument shows for approximately 5
seconds the instruments’s software revision, for example: r.1.
• Displaying, control (if present) and diagnostics
The instrument shows continuously the value of the input variable as
defined in the programming phase.
Thevalueshownonthedisplayiscontinuouslycomparedwiththevalue
ofthe set-pointand ofthe otherparameters, thus generatingthe control
function by energizing/de-energizing the output relay.
• Programming
This phase is identified by the blinking of the decimal point on the right
side of the display.
To enter the programming phase, press the
S
key until “PAS”is
shown on the display; then “0”is displayed: the correct numerical code
(password) is to be entered. The following conditions may occur:
•1)theoperatorhasn’tenteredanyPassword:pressthe
S
keyagain
to enter the configuration menus of the instrument;

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•2) the operator has already entered a Password: select the correct
password by means of the key (to increase the value) or key
(to decrease it) until the desired value is displayed. Press the
S
key
toconfirmthevalue:ifthepasswordiscorrect,thenthedisplaywillshow
“PAS”againfollowedbytherelatingnumericalcode;pressthe
S
key
oncemoreinordertodisplaythefirstconfigurationmenu;ifthepassword
is not correct, the display shows “End”and the instrument goes back to
the measuring and control phase.
PROGRAMMING OFANEW PASSWORDANDAUTOMATIC SELEC-
TION OF THE PROTECTION LEVEL OF THE CONFIGURATION
DATA.
To enter the new Password:
•if the Password is “0”, press the
S
key when the display shows the
“PAS”message for the second time; enter the desired numerical code
using the or keys, then confirm it by pressing the
S
key:
the display will show the first configuration menu (“inP”);
•if the Password has already been entered, you can modify it following
the procedure described at No. 2; after the “PAS”message has been
shown a second time, enter the new numerical code using the or
keysandconfirmitbypressingthe
S
key:thedisplaywillshow
the first configuration menu (“inP”).
Data protection levels:
•if the password is “0”, the configuration data are not protected by
undesired accesses;

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•ifthePasswordis anumberbetween“1and255”,theconfigurationdata
are entirely protected against undesired accesses;
It is possible to reset the Password by entering the number 768.
•All programming/configuration steps of LDI35 are shown in the
flow chart in the centre of this manual. The flow chart has been
conceived to make the operator better understand the program-
ming structure of LDI35 indicating the position of the current
function with regards to the others. The flow chart also makes
more easily understandable the commands to be used in the
configuration phase.
•See the chapter “Front panel description”for information regard-
ing the use of the key-pad and the relevant main functions.
•Glossary of displayed symbol:
(thesymbolslike PAS inablackbackgroundbelongtothemainmenu;
thesymbolslike AC inawhitebackgroundbelongtothesecondarymenu).
PAS : access key to programming
inP : menu to select measuring inputs
For LDI35.AV2 only:
AC : AC voltage/current measurements;
dC : DC voltage/current measurements.
For LDI35.CF only:
rtd : thermoresistance/Ohm measurements;
tC : thermocouple measurements
r1 , r2 , r3 , r4 , r5 : range selection (see table “inP”in the
flow chart).
SCA : menu to program the scaling parameters

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Lo.E : programming of the min. value of the electrical scale (see table
“inP”in the flow chart). Enter the minimum value that is to be measured
(zero scale).
Hi.E : programming of the max. value of the electrical scale (see table
“inP”in the flow chart). Enter the maximum value to be measured (full
scale).
NOTE: in the resistance measurements (“inP”⇒ “rtd”⇒ “r5”) the
maximum electrical full scale to be entered is: “1999”and the corre-
sponding value of “Hi”must be “199.9”in order to take resistance
measurements with a 0.1Ωresolution.
NOTE: if the measured variable goes beyond the scale limits “Lo.E”/
”Hi.E”, the value displayed during the measuring phase will be blinking
and updated with reference to the measured value up to the maximum
displaying range (“dC”and temperature measurements: -1999/1999;
“AC”and resistance measurements: 0/1999).
d.P : selection of the decimal point position in the “Hi-Lo”scale.
Lo : programming of the min. value of the displayed scale. Enter the
value to be displayed in correspondence with the minimum value of the
electrical scale “Lo.E”.
Example:“Lo.E”=4.00mA⇒“Lo”=100mbar,meansthatwhenthevalue
measured by LDI35 is 4 mA, the displayed value will be 100 mbar.
Hi : programming of the max. value of the displayed scale. Enter the
valuetobemeasuredincorrespondencewiththemaximumvalueofthe
electrical scale “Hi.E”. Example: “Hi.E”=19.99 mA ⇒“Hi”=1800 mbar,
means that when the value measured by LDI35 is 20 mA, the displayed
value will be 1800 mbar.
NOTE: electrical scale and displayed scale must have:

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•corresponding values (Lo.E = Lo, Hi.E = Hi), if the same value is to be
both measured and displayed.
•different values, if the signal to be measured is different from the one
to be displayed (see examples of “Lo”and “Hi”).
•inverted values, if an increasing signal to be measured must corre-
spond to a decreasing value to be displayed (scale inversion).
Example: “Lo.E”=4.00mA⇒“Lo”=1800mbar;“Hi.E”=19.99mA⇒“Hi”=0mbar,
means that when the measured value increases from 4 to 20mA, the
displayed value decreases from 1800 mbar to 0.
As you can see, the scales can be programmed with absolute freedom.
NOTE:todisplay temperaturevaluesas“°F”, itisnecessaryto program
the electrical scale as “°C”and enter the values for the displayed scale
according to the following relationship:
°F = (1.8 x °C) + 32.
Example: “Lo.E”=-50°C ⇒“Lo”=-58°F; “Hi.E”=+760°C⇒“Hi”=+1400 °F,
means that the new measuring range becomes -58 °F to +1400 °F.The
data to be entered in the displayed scale can be calculated either by
meansoftheabovementioned“°F”relationship,orusingthedataofthe
relevantmeasuringrange(seechapter “TechnicalFeatures”,paragraph
“Inputs (temperature)”.
diS : menu to select the displaying mode.
35 : displaying at 3 1/2digit (1999)
30 : displaying at 3 digit + dummy zero (9990).
SP.1 : menu to select the programming of the set-point parameters.
tYP : selection of the type of control.
oFF : signalling of the abnormal condition. The relay is activated when
a burn-out condition occurs or the measurement is out of the electrical

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range(displayingandblinkingofthemeasuredvalueordisplayingofthe
“EEE”/ “-EE”message).
Note: by selecting this function the “SE.t”, “HYS”parameters are not
active.
do : down/low alarm set-point. The relay will be activated when the
measured value goes below the set-point value.
uP : up/high alarm set-point. The relay will be activated when the
measured value goes over the set-point value.
d.do :alarmset-pointsimilarto“do”,butwithalarminhibitioneventually
presentwhen LDI35is switched on.Thecontrolstarts onlyafter the first
condition of non-alarm has been signalled.
uP.L : up/high alarm set-point with latch function.
Thealarmfunctionsasper“uP”,butthealarmcanberesetonlymanuallywhen
the key is pressed for at least 5 seconds during the measuring phase.
do.L :down/low alarmset-pointwithlatchfunction.Thealarmfunctions
asper“do”andcanbereset onlymanuallywhenthe keyispressed
for at least 5 seconds during the measuring phase.
SEt :valueofthealarmset-pointtobeprogrammedwithinthefollowing
range: Lo. ≤SEt ≤Hi.
HYS : programming of the hysteresis value of the set-point. The
hysteresis is a numerical value included within the range: 0 ≤HYS ≤
1999/9990 and represents the difference between the value of the ON
alarm status and the value of the OFF alarm status. The hysteresis
modifies the value of the OFF alarm status not only with regards to the